摘要
为进一步探讨8-羟基喹哪啶树脂(PS-HQD)吸附废水中Cu^(2+)的吸附机理,用静态法研究了PS-HQD吸附Cu^(2+)的动力学与热力学规律等吸附性能。结果表明:在实验条件下,ΔH>0、ΔS>0说明PS-HQD对Cu^(2+)的吸附过程为吸热的熵增过程,ΔG<0表明吸附过程能够自发进行,准二级动力学Lagergren方程更适合描述此吸附过程。PS-HQD第5次吸附的再生效率仍可达到83.84%,说明PS-HQD对Cu^(2+)的吸附具有良好的再生性能。
To further explore the adsorption mechanism of 8-Hydroxyquinadine chelate resin(PS-HQD)for Cu^2+ in wastewater, the adsorption isotherm and kinetics property of PS-HQD for Cu^2+ were studied with static adsorption. The results showed that the Lgergren pseudo-second order kinetic model was more suitable for describing the adsorption process. In the adsorption process of PS-HQD for Cu^2+, both the enthalpy change ΔH and entropy change ΔS were positive, while the free energy change ΔG was negative,it was indicated that the adsorption process was aendothermic, entropy increasing and spontaneous process under the experimental conditions. It’s regeneration efficiency could still reach 83.84% when the resin could be adsorbed and eluted Cu^2+ for five times, it showed that PS-HQD had good regeneration performance for Cu^2+.
作者
周小华
周泽仪
Zhou Xiaohua;Zhou Zeyi(Kunming Cooperative Research Center for Pollution Prevention of Dianchi (Lake), Kunming University, Kunming Yunnan, 650214;College of Natural Resources and Environment,South China Agricultural University,Guangzhou Guangdong,510642)
出处
《云南化工》
CAS
2019年第1期44-47,共4页
Yunnan Chemical Technology
基金
昆明学院人才引进项目(HJL18009)
昆明滇池度假区环保局项目(HX190001)
